<script setup>
import { ref, defineEmits, defineExpose } from 'vue'
import Coms from './Coms.vue'

// 父组件传值
const props = defineProps({
  msg: String
})
console.log(props.msg, 'props')
// console.log(msg, 'msg')

const counts = ref(123456)
defineExpose({
  counts
})

// 向外暴露事件
const emit = defineEmits(['titleClick'])

const titleClick = () => {
  console.log(123)
  emit('titleClick')

}

const count = ref(0)
</script>

<template>
  <h1 @click="titleClick">{{ msg }}</h1>
  <Coms></Coms>
  <p>
    Recommended IDE setup:
    <a href="https://code.visualstudio.com/" target="_blank">VSCode</a>
    +
    <a href="https://github.com/johnsoncodehk/volar" target="_blank">Volar</a>
  </p>

  <p>
    <a href="https://vitejs.dev/guide/features.html" target="_blank">
      Vite Documentation
    </a>
    |
    <a href="https://v3.vuejs.org/" target="_blank">Vue 3 Documentation</a>
  </p>

  <button type="button" @click="count++">count is: {{ count }}</button>
  <p>
    Edit
    <code>components/HelloWorld.vue</code> to test hot module replacement.
  </p>
</template>

<style scoped>
a {
  color: #42b983;
}
</style>
